抄録
Previous works have indicated that Ss could classify the sets of figures which comprised the distorted patterns from a protyotype figure. In addition, Ss classified more easily the prototypes as compared with the distorted ones out of the learning set. In the present experiment, clearly-distinguishable categories (prototypes) were used and a large number of over-learning trials were provided to the Ss. Then the prototypes were classified as accurately and quickly as the "old" distorted figures which had been comprised in the learning set. This result suggests that Ss can utilize the prototype information which were abstracted from the original learning sets, for classifying new figures.
